Switch for electric lights.



F. H. HART.

SWITCH FOR ELECTRIC LIGHTS.

APPLICATION FILED MAR. 19. I917.

1,227,132. Patented May 22, 1917.

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FRANKLIN H. HART, on EW HAVEN, couuncrrcu'r, ASSIGNOR TO c. COWLES & co., on

NEW HAVEN, CONNECTICUT, A CORPOBA'JTJION'.

SWITCH FOB nnnoriuc LIGHTS.

Specification of Letters Patent.

Application filed March 19, 1917. Serial No. 155,801.

T0 all-whom it may concern- Be it known that I, FRANKLIN H. HARr',

a citizen of the United States, residing at New Haven, in the county of New Haven and State of Connecticut, have invented a new and useful Improvement in Switches for Electric Lights; and I do hereby declare the following, when taken in connection with the accompanying drawings and the characters' of reference marked thereon, to best full, clear, and exact description of the same, and which said drawings constitute part of this application, and represent, in

Figure 1 a side-view partly broken away, of a canopy lamp constructed in accordance with my invention, and illustrating my improved switch therefor.-

Fig. 2 an outer end view of my improved switch, detached.

Fig. 3 a transverse sectional View ofthe in switches for electric lights and particularly to electric lights used in connection with socalled canopy lights for the ceilings of limousines. In some cases these lights are controlled by push-button switches at the side of a car, while in other cases the switch is in the canopy or dome, and it is to switches in the canopy or dome that this invention particularly relates, the ob ect being to provide a switch in connection with a lamp socket which is readily accessible and by which the circuit may be conveniently opened and closed; and the invention consists in the constructionhereinafter de-. scribed and particularly recited in the claims.

In carrying out my invention I employ the usual dome or canopy 6 adapted to be secured in the ceiling of a limousine in the usual way. In this canopy is a reflector 7 having side walls 8. At one side the wall 8 is perforated to receive a lamp socket 9 in which an' incandescent lamp 10 is connected in the usual way, herein shown by a bayonet joint 11. In the socket isa plug 12 of insulating material, and in this plug is a metallic cup 13 in which 1s a contact pin 14 the pin projecting through a;

the end of the'cup so as to probody - socket and projecting ject into the socket and make contact with.

the lamp. This cup projects beyond the end of the plug and pivotally mounted in the outer endis a switch plate 16 provided with a finger-piece 17. Between the plate and the'contact pin 14: is a spring 18, and resting on the spring andv bearing against the plate 16 is a ba1l19 the plate 16 having notches 20 and 21 in which the ball may rest. The plug 12 projects beyond'the socket 12 and connected to the outer end of this plug is a'ring 22 with which one line 23 of the circuit is connected by a screw 24. The plate 16'has a contact-finger 25 which when the switch is turned,'will engage with the edge of the ring 22 so as to close the circuit through the lamp. At this time the ball rests in the notch 21 so as to hold the switch in the closed position. When the switch is turned the ball rests in the notch 20 as shown in Fig. 3 of the drawings. For a double Patented May 22. 1917.

point contact, a second contact-point 26 will,

be mounted in the plug 13, with which a second wire 27 of the circuit may be connected by a screw 28. In case of'single contact, this pin 26 will be omitted as indicated in Fig. 5 of the drawings, the circuit being opened or closed through the contact-plate v 16 in the same way in both cases. It may be noted that the finger-piece 17 pro- 'ects through a clearance slot 27 formed for it in the shell 6 where it is convenient of acbeyond the outer end thereof, a ring connect ed with the projecting end of the said plug, a cup mounted in said plug and projecting beyond the said ring, a switch-plate pivotally connected with the outer end of the cup and adapted to be turned into and out of engagement with the ring, whe'reby the circuit is opened or closed through the lamp socket.

2. The herein described switch for electric lights comprising a lamp socket, a lamp mounted therein, a plug mounted in said beyond the outer end thereof, a ring connected with the outer end of the plug, a cup mounted in the plug and projecting beyondsaid ring, a switch plate mounted in the outer end of said cup and adapted to be turned into or out of engagement with said ring, a pin in said cup, a ball in said cup, a spring between the pin and ball, the ball engaged by said plate whereby connection is made through said pin, the plate being formed with notches for engagement with said ball, whereby the switch plate is locked in the open or closed position.

3. The combination with a shell, of a reflector mounted in said shell, a lamp socket mounted in said reflector and adapted to have an incandescent lamp connected with it, a plug in said shell and projecting beyond the end thereof, a ring connected with the outer'end of said plug, a cup in said plug projecting beyond the edge of the said ring, a switch plate mounted in said cup and adapted to be turned into and out of engagement with said ring, and electric connection through the cup and the lamp, whereby when the plate is thrown into engagement with the ring the circuit through the lamp will be closed.

In testimony whereof, I have signed this specification 1n the presence of two subscribing witnesses.

FRANKLIN H. HART.

Witnesses: I

H. A. Frrz GERALD, J. L. BROOKETT. 

